Math Problem Statement

Two point charges (+9.80 nC and -9.80 nC) are located 8.00 cm apart. Let U = 0 when all of the charges are separated by infinite distances. What is the potential energy if a third point charge q = -4.20 nC is placed at point b?

Solution

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Math Problem Analysis

Mathematical Concepts

Electrostatics
Electric Potential Energy

Formulas

Electric potential energy U = k * q1 * q2 / r
k = 8.99 × 10^9 N·m²/C²

Theorems

Principle of Superposition in Electrostatics

Suitable Grade Level

Undergraduate Physics (First Year)